"Gansus likely behaved much like its modern relatives..." It's possible that's because they were created, not evolved? ;-)
Of course. Everything's possible with creation.
As Martin Gardner pointed out in "Fads and Fallacies in the Name of Science" over forty years ago, one can dismiss the entire fossil record, carbon-14 and all other evidence of evolution by invoking an omnipotent creator. Either life on Earth has evolved over a period of hundreds of millions of years, through changes in climate and geology, or God made a world a few thousands years ago with attributes completely consistent with the former hypothesis.
Which of the two theories you prefer probably says more about you than the validity of either theory.